Getting a facial is as much about indulgence and relaxation as it is about cleansing and extraction. Even dermatologists, who don’t need to pay someone to apply a mask, enjoy having their pores pampered. “There’s nothing like a good facial to make you feel terrific,” acknowledges Diane Berson, assistant clinical professor of dermatology at New York University School of Medicine. Her favorite facialist is Regine Berthelot at Frédéric Fekkai Beauté de Provence (15 East 57th Street; 212-753-9500). Before you book an appointment, however, check with your doctor – sometimes seemingly harmless skin-care services can exacerbate existing problems. Which is another reason Berson likes Berthelot. “She knows what to tackle and which lesions are suspicious,” says Berson. “Someone who knows what could be particularly harmful is serving a higher function than just clearing out your pores.”